"We are actively working with our local carrier to enable service to the Roxbury neighborhood in the coming weeks. Once completed, Prime members in every zip code in Boston, including the Roxbury neighborhood, will receive Prime Free Same-Day Delivery, in addition to existing Free Two-Day and One-Day shipping options," spokesman Scott Stanzel said in a statement.

Earlier, the controversy over the lapse had boiled over into a full-on political throw-down.

Mayor Marty Walsh said in a statement earlier in the day on Tuesday that his office urged the online shopping giant to reconsider its decision not to bring the service to three ZIP codes in the predominantly black neighborhood, but that Amazon wouldn't budge.

“We have been working with Amazon to show them that their current map of Boston leaves a hole right in the heart of the city, but it is clear they are not willing to change their policy,” Walsh’s office wrote. “We understand that the people who run Amazon don’t live here and might not understand our great neighborhoods, but this is an egregious mistake that must be changed. We will continue to push for inclusivity for the residents of Boston and we hope that Amazon realizes that this form of business is not good business.”

The decision came after Walsh's statement cycled through Boston media, according to tweets from Joyce Linehan, chief of policy for the mayor's office.

Walsh issued a similar statement on Tuesday afternoon.

"After speaking personally with the executives at Amazon, the company informed me today that they will now be offering same day service to every neighborhood in Boston. I thank Amazon for this decision, and look forward to its implementation," Walsh said.

Amazon called after Mayor issued statement. Mayor spoke to them and they said they'd change policy. Their statement has gone out. #bospoli

Delivery maps in five other cities also excluded minority neighborhoods, Bloomberg found.

An Amazon spokesman told Metro last week the maps were drawn for the sake of efficiency of its service – the logistics of getting products to doorsteps in just a few hours.

“There are a number of factors that go into determining where we can deliver same-day,” spokesman Scott Stanzel wrote in a statement. “Those include distance to the nearest fulfillment center, local demand in an area, numbers of Prime members in an area, as well as the ability of our various carrier partners to deliver up to 9:00 p.m. every single day, even Sunday.”

“Demographics play no role in it. Zero,” Craig Berman, the company’s executive vice president for global communications, told Bloomberg.

“Amazon Prime only follows a long history of that kind of economic boycott of services in certain neighborhoods,” Ed Gaskin, executive director of Roxbury’s Grove Hall Main Streets, told The Bay State Banner.

“I am concerned that your company’s model for determining which areas will receive same-day delivery disproportionately disadvantages minority and low-income communities, which may already face substantial obstacles accessing stores that sell essential items including groceries, toiletries, and school supplies,” Markey wrote. “While Amazon has the right to use its own business analysis to determine where to offer same-day delivery, concerns emerge when the company offers services to the vast majority of an area but selectively excludes a few neighborhoods where low-income and minority residents call home.”